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7.22ct Crystal Boulder Opal
AU$1,0627.22ct Australian Crystal Boulder Opal from Queensland displays luminous green fire glowing through its translucent crystal body. Expertly polished and 100% natural, this untreated gemstone is ideal for fine jewelry design or as a meaningful October birthstone collector piece.
Type: Natural Solid Boulder Opal (Boulder Pipe Opal)
Origin: Queensland, Australia
Dimensions: 27.7 × 14.7 × 8.5 mm (approx.)
Weight: 21.34 ct (approx.)
Color: Green and turquoise fire through sandstone matrix
Cut/Shape: Oval cabochon, polished finish
Treatment: 100% natural, untreated opal (not a doublet or triplet)
Boulder Opal Pendant 57ct
AU$1,06257ct solid boulder opal pendant from Winton Australia with electric blue and purple fire. 100% natural and untreated, polished and ready to wear with an adjustable necklace.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 57 ct approx.
Dimensions: 36 x 20 x 6 mm approx.
Color: Electric blue and purple fire with ironstone matrix
Cut/Shape: Rectangular polished cabochon
Necklace: Black Adjustable cord, easy and comfortable
Treatment: 100% natural, untreated opal (not a doublet or triplet)
44.69ct Large Natural Boulder Opal Winton Blue Fire
AU$1,055
Opal Details
Type: Natural Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 47 × 17.5 × 6.2 mm approx
Weight: 44.69 ct approx
1.2ct Dark Opal Multicolor flash
AU$1,055Natural Solid Untreated Dark Opal / Semi Black Opal Polished Stone
Weight: 1.2 ct
Dimensions: 9x8x5.2 mm
Source : Lightning Ridge, NSW, Australia
Size and weight are approximate
1.4ct Natural Dark Opal Lightning Ridge
AU$1,041100% Natural Dark Opal / Semi Black Opal Polished stone
Weight : 1.40 ct
Dimension : 10x7x2 mm
Source : Lightning Ridge, NSW, Australia
(Size and weight are approximate)
Natural Dark Opal 1.1 ct
AU$1,027Natural Solid Untreated Lightning Ridge Dark Opal / Semi Black Opal Polished Stone
Weight: 1.1 ct
Dimensions: 9.5x7x2 mm
Source : Lightning Ridge, NSW, Australia
Size and weight are approximate
Boulder Opal Rubbed Rough Parcel 374ctw
AU$1,020Weight: 374ctw total weight
Dimensions: See ruler in image
Source: Queensland, Australia
Price: $720
Quantity: 10 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.
2.72ct Dark Opal MultiColor Fire
AU$1,020Source: Lightning Ridge, NSW, Australia
Dimensions: 13x7x4 mm approx
Weight: 2.72ct approx
10x5mm Crystal Opal Calibrated 7ct
AU$991Australian crystal opal calibrated parcel from Coober Pedy featuring fifteen marquise cut cabochons. Displaying bright neon fire with orange yellow green blue and cyan flashes. Ideal for professional jewelry making, matched designs, and custom settings.
Type: Natural Crystal Opal Calibrated Parcel
Origin: Coober Pedy South Australia
Quantity: 15 pieces
Total Weight: 7ctw
Stone Size: 10 x 5 mm approx
Shape: Marquise polished cabochon
Color: Bright neon fire with orange yellow green blue and cyan flashes
Appearance: Crystal to semi crystal transparency
Treatment: 100% natural untreated opal not doublet or triplet
Suitable For: Rings earrings pendants matched jewelry sets
Sterling Silver Purple Boulder Opal Ring 37ct US 8 3/4
AU$991Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 20.5×16.5×6 mm
Whole Ring Weight: 37 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US8 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate
1.35 ct Dark Opal Lightning ridge
AU$991Natural Solid Untreated Dark Opal / Semi Black Opal Polished Stone
Weight: 1.35 ct
Dimensions: 9.5x8x2 mm
Source : Lightning Ridge, NSW, Australia
Size and weight are approximate
Sterling Silver Ocean Blue Boulder Opal Ring 35.5 ct US 9 3/4
AU$984Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 20×16.5×5.5 mm
Whole Ring Weight: 35.5 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US9 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate
Blue Green Boulder Opal 12.76 ct
AU$984Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 12.76 carats
Dimensions: 36x8x4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Sterling Silver Half Moon Ocean Boulder Opal Ring 30 ct US 7 3/4
AU$970Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 23×15.5×5 mm
Whole Ring Weight: 30 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US7 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate
10.8ct Natural Boulder Opal Wood Fossil
AU$970Opal: Natural, Solid, Untreated, Polished
Color: Purple
Shape: Freeform
Weight: 10.8 ct
Dimensions: 33×9.5x4mm
Source: Winton, QLD, Australia
Size and weight are approximate
1.71ct Natural Black Crystal Opal Green Blue Fire
AU$970100% Natural Solid Black Crystal Opal Polished Stone
Weight: 1.71 ct
Dimensions: 10.8×8.2×3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
37.57ct Natural Boulder Opal | Blue Green Fire
AU$970100% Natural Boulder Opal
Weight: 37.57 ct
Dimensions: 49.5×16.5×6 mm
Source: Winton, QLD, Australia
0.88ct Dark Opal Lightning Ridge Orange Fire
AU$970100% Natural Australian Opal, Untreated, Polished
Dimensions: 11x5x2.5 mm
Weight: 0.88 ct
Source: Lightning Ridge, NSW, Australia
(Size and weight are approximate)
Rainbow Boulder Opal Matrix Rubbed Rough Parcel 84g
AU$963Weight: 188 gram total weight
Dimensions: See ruler in image
Source: Winton, QLD, Australia
Price: $530
Quantity: 17 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.
Boulder Opal 12.18ct Blue Green Fire
AU$963Natural Australian boulder opal displaying blue and green fire with a bright central color bar surrounded by softer light blue body tone. Polished freeform cabochon, ideal for pendant or statement jewelry use.
Opal Type: Natural boulder opal
Source: Winton, QLD, Australia
Weight: 12.18ct approx
Dimensions: 26.5x14x4 mm approx
Source: Winton, QLD, Australia
Natural Australian Opal
Explore genuine natural Australian opals from the world’s premier opal fields including Lightning Ridge, Queensland, and South Australia. Our collection features stunning black opals with intense color displays, vibrant boulder opals with natural ironstone backing, luminous crystal opals showcasing transparency, and elegant white opals with soft pastel hues. Each opal is ethically sourced, 100 percent natural and untreated, displaying unique play of color with brilliant flashes of red, blue, green, and rainbow patterns that make every stone genuinely irreplaceable.
Shop loose opal gemstones perfect for custom jewelry creation, finished opal rings and pendants in silver, gold, and platinum settings. Whether you are a collector seeking investment quality specimens, a jeweler sourcing premium gemstones, or someone drawn to the mesmerizing beauty of Australian opals, our curated selection delivers exceptional quality, authenticity, and the timeless appeal of Australia’s national gemstone celebrated worldwide as the October birthstone.
Natural Australian Opal FAQs
What is Australian opal?
Australian opal is a precious gemstone formed from silica deposits that displays unique play of color with flashes of blue, green, red, orange, and rainbow hues. Australia produces over 95 percent of the world’s precious opals from mining fields including Lightning Ridge, Queensland, and South Australia, making it the global center for opal production.
What are the different types of Australian opals?
The main types of Australian opals include black opal from Lightning Ridge with dark backgrounds enhancing color displays, boulder opal from Queensland with natural ironstone backing, crystal opal featuring transparency and luminosity, and white opal from South Australia with lighter milky backgrounds and pastel colors.
How do I know if my Australian opal is real?
Real Australian opals display natural play of color that shifts with movement and viewing angle, have irregular patterns unique to each stone, and show depth when examined closely. Doublets and triplets have visible layers when viewed from the side, while solid opals are cut from single pieces. Professional gemological testing can confirm authenticity definitively.
How do I care for my Australian opal jewelry?
Remove opal jewelry before swimming, bathing, or using harsh chemicals. Clean gently with mild soap and lukewarm water using a soft cloth. Avoid extreme temperature changes and prolonged direct sunlight. Store opals separately in soft pouches to prevent scratching from harder gemstones. With proper care, Australian opals remain beautiful for generations.
What is the difference between black opal and white opal?
Black opal features a dark background that makes colors appear more vivid and dramatic, found primarily at Lightning Ridge. White opal has a lighter milky background displaying softer pastel colors, sourced mainly from South Australian fields like Coober Pedy. Both are genuine precious opals with play of color.
Can Australian opals be worn every day?
Yes, Australian opals can be worn daily with reasonable care. Boulder opals are particularly durable due to their natural ironstone backing. Remove opal jewelry during activities involving impacts, chemicals, or extreme temperatures. Rings may require more careful wear than pendants or earrings due to exposure.
Why is Lightning Ridge famous for opals?
Lightning Ridge is famous for producing the world’s finest black opals with exceptional color displays on dark backgrounds. The unique geological conditions in this New South Wales region created over millions of years result in opals found nowhere else on Earth, making Lightning Ridge material highly sought after by collectors worldwide.